. . . . "Standard procedures for calibrating magnetic instruments to measure the delta ferrite content of austenitic stainless steel weld metal"@en . "Standard procedures for calibrating magnetic instruments to measure the delta ferrite content of austenitic stainless steel weld metal" . . "Calibrating magnetic instruments to measure the delta ferrite content of austenitic stainless steel weld metal" . . . . . . . "Normes" . . . . . . . . . . .